MLA

Wootton, William W. William W. Wootton Letters. 1847. https://collections.library.yale.edu/catalog/17437394.

APA, 6th edition

Wootton, W. W. (1847). William W. Wootton letters [Correspondence, Manuscripts, Wills--Iowa--19th century]. https://collections.library.yale.edu/catalog/17437394.